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1220104113 = 310312731091
BaseRepresentation
bin100100010111001…
…0100111110110001
310011000211201012020
41020232110332301
54444321312423
6321023022053
742143466564
oct11056247661
93130751166
101220104113
11576798308
122a073a929
13165a130c7
14b80844db
15721ac4e3
hex48b94fb1

1220104113 has 16 divisors (see below), whose sum is σ = 1655586816. Its totient is φ = 799137360.

The previous prime is 1220104111. The next prime is 1220104177. The reversal of 1220104113 is 3114010221.

1220104113 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1220104113 - 21 = 1220104111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220104092 and 1220104101.

It is not an unprimeable number, because it can be changed into a prime (1220104111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23698 + ... + 54788.

It is an arithmetic number, because the mean of its divisors is an integer number (103474176).

Almost surely, 21220104113 is an apocalyptic number.

It is an amenable number.

1220104113 is a deficient number, since it is larger than the sum of its proper divisors (435482703).

1220104113 is a wasteful number, since it uses less digits than its factorization.

1220104113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31324.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1220104113 is about 34929.9887346103. The cubic root of 1220104113 is about 1068.5601248678.

Adding to 1220104113 its reverse (3114010221), we get a palindrome (4334114334).

The spelling of 1220104113 in words is "one billion, two hundred twenty million, one hundred four thousand, one hundred thirteen".

Divisors: 1 3 103 127 309 381 13081 31091 39243 93273 3202373 3948557 9607119 11845671 406701371 1220104113